US11619927B2 - Automatic analysis of real time conditions in an activity space - Google Patents
Automatic analysis of real time conditions in an activity space Download PDFInfo
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- US11619927B2 US11619927B2 US16/181,258 US201816181258A US11619927B2 US 11619927 B2 US11619927 B2 US 11619927B2 US 201816181258 A US201816181258 A US 201816181258A US 11619927 B2 US11619927 B2 US 11619927B2
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Definitions
- the manner in which the actors perform the activities typically has significant impact on successfully achieving various objectives associated with the activities.
- the objectives can include correctly performing an action or task (e.g., assembling product components, interacting with another actor/entity, etc.) effectively and efficiently (e.g., low cost, timely/rapidly, conservation of resources and energy, safely, repeatability, etc.).
- reliable and proper achievement of the various objectives can be difficult.
- Realization of the objectives can be influenced by the work environment (e.g., manufacturing environments, service environments, medical environments, retail environments, etc.), the nature of the activity itself (e.g., complex, simple, repetitive, non-uniform, safe. hazardous, etc.), and business considerations (e.g., cost, market responsiveness, transportation. etc.).
- Proper performance of the activities often depends upon the various aspects of actors involved in performing an activity. There can be different actors.
- An actor can be human, a programmable machine (e.g., a robot, a cobot, a CNC machine, etc.), and a hard automation machine (e.g., a casting machine,______, etc.).
- the actors in turn can have various characteristics, attributes, and features.
- human actors can have intelligence, cognition, instinct, reflex, intuition and so on, but can also be prone to inconsistency, physical limitations, injury and other human limitations.
- a robot can have precision, repeatability, is untiring, hardy and so on, but lack intuition, intelligence, initiative, adaptability, and so forth.
- a programmable machine is relatively difficult and time consuming to program/reprogram and a human is capable of learning and understanding relatively easily and quickly.
- a method comprises: accessing information associated with an activity space, including information on a newly discovered previously unmodeled entity; analyzing the activity information, including activity information associated with the previously unmodeled entity; forwarding feedback on the results of the analysis, including analysis results for the updated modeled information; and utilizing the feedback in a coordinated path plan check process.
- the coordinated path plan check process comprises: creating a solid/CAD model including updated modeled information; simulating an activity including the updated modeled information; generating a coordinated path plan for entities in the activity space; and testing the coordinated path plan.
- the coordinated path plan check process can be a success.
- the analyzing can include automatic identification of potential collision points for a first actor, including potential collision points with the newly discovered object.
- the newly discovered previously unmodeled entity can interfere with an actor from performing an activity.
- the newly discovered object can be a portion of a tool component of a product, a robot, and so on.
- FIG. 1 shows an action recognition and analytics system, in accordance with aspect of the present technology.
- FIG. 2 shows an exemplary deep learning type machine learning back-end unit, in accordance with aspects of the present technology.
- FIG. 3 shows an exemplary Convolution Neural Network (CNN) and Long Short Term Memory (LSTM) Recurrent Neural Network (RNN), in accordance with aspects of the present technology.
- CNN Convolution Neural Network
- LSTM Long Short Term Memory
- RNN Recurrent Neural Network
- FIG. 4 shows an exemplary method of detecting actions in a sensor stream, in accordance with aspects of the present technology.
- FIG. 5 shows an action recognition and analytics system, in accordance with aspects of the present technology.
- FIG. 6 shows an exemplary method of detecting actions, in accordance with aspects of the present technology.
- FIG. 7 shows an action recognition and analytics system, in accordance with aspects of the present technology.
- FIG. 8 shows an exemplary station, in accordance with aspects of the present technology
- FIG. 9 shows an exemplary station, in accordance with aspects of the present technology
- FIG. 10 shows an exemplary station activity analysis method, in accordance with one embodiment.
- FIG. 11 is a block diagram of an exemplary activity space with an actor in accordance with one embodiment.
- FIG. 12 is a block diagram of an exemplary activity space with an actor in accordance with one embodiment.
- FIG. 13 is a flow chart of an exemplary automated actor modeling method in accordance with one embodiment.
- FIG. 14 a side view of an exemplary reach scenario in a station is shown in accordance with one embodiment.
- FIG. 15 is a top down view of another exemplary reach scenario in a station is shown in accordance with one embodiment.
- FIG. 16 is a block diagram of an exemplary data structure in accordance with one embodiment.
- FIG. 17 is an illustration of an exemplary convex hull curve of the reach points in accordance with one embodiment.
- FIG. 18 is an exemplary reach curve with human motion dynamics in accordance with one embodiment.
- FIG. 19 is an exemplary reach curve with attitudinal control in accordance with one embodiment.
- FIG. 20 is an exemplary maximum reach curve associated with requirements of different activities in accordance with one embodiment.
- FIG. 21 is a flow chart of exemplary method in accordance with one embodiment.
- FIG. 22 is a flow chart of a exemplary coordinated plan check process in accordance with one embodiment.
- FIG. 23 is a block diagram of an exemplary activity area and flow chart of a activity modeling method in accordance with one embodiment.
- FIG. 24 is a block diagram of an exemplary activity area and flow chart of a activity modeling method in accordance with one embodiment.
- FIG. 25 is a block diagram of an exemplary activity area and flow chart of a activity modeling method in accordance with one embodiment.
- FIG. 26 is a block diagram of a exemplary data structure 2 in accordance with one embodiment.
- FIG. 27 is a block diagram of a exemplary data structure 2700 in accordance with one embodiment.
- FIG. 28 is a flow chart of a exemplary method 2800 in accordance with one embodiment.
- FIG. 29 shows a block diagram of an example of a computing system 2900 upon which one or more various embodiments described herein may be implemented in accordance with various embodiments of the present disclosure.
- the term process can include processes, procedures, transactions, routines, practices, and the like.
- sequence can include sequences, orders, arrangements, and the like.
- action can include actions, steps, tasks, activity, motion, movement, and the like.
- object can include objects, parts, components, items, elements, pieces, assemblies, sub-assemblies, and the like.
- a process can include a set of actions or one or more subsets of actions, arranged in one or more sequences, and performed on one or more objects by one or more actors.
- a cycle can include a set of processes or one or more subsets of processes performed in one or more sequences.
- a sensor stream can include a video sensor stream, thermal sensor stream, infrared sensor stream, hyperspectral sensor stream, audio sensor stream, depth data stream, and the like.
- frame based sensor stream can include any sensor stream that can be represented by a two or more dimensional array of data values.
- parameter can include parameters, attributes, or the like.
- indicator can include indicators, identifiers, labels, tags, states, attributes, values or the like.
- feedback can include feedback, commands, directions, alerts, alarms, instructions, orders, and the like.
- actor can include actors, workers, employees, operators, assemblers, contractors, associates, managers, users, entities, humans, cobots, robots, and the like as well as combinations of them.
- robot can include a machine, device, apparatus or the like, especially one programmable by a computer, capable of carrying out a series of actions automatically. The actions can be autonomous, semi-autonomous, assisted, or the like.
- cobot can include a robot intended to interact with humans in a shared workspace.
- package can include packages, packets, bundles, boxes, containers, cases, cartons, kits, and the like.
- real time can include responses within a given latency, which can vary from sub-second to seconds
- the action recognition and analytics system 100 can be deployed in a manufacturing, health care, warehousing, shipping, retail, restaurant or similar context.
- a manufacturing context can include one or more stations 105 - 115 and one or more actors 120 - 130 disposed at the one or more stations.
- the actors can include humans, machine or any combination therefore.
- individual or multiple workers can be deployed at one or more stations along a manufacturing assembly line.
- One or more robots can be deployed at other stations.
- a combination of one or more workers and/or one or more robots can be deployed additional stations It is to be noted that the one or more stations 105 - 115 and the one or more actors are not generally considered to be included in the system 100 .
- an operating room can comprise a single station implementation.
- a plurality of sensors such as video cameras, thermal imaging sensors, depth sensors, or the like, can be disposed non-intrusively at various positions around the operating room.
- One or more additional sensors such as audio, temperature, acceleration, torque, compression, tension, or the like sensors, can also be disposed non-intrusively at various positions around the operating room.
- the plurality of stations may represent different loading docks, conveyor belts, forklifts, sorting stations, holding areas, and the like.
- a plurality of sensors such as video cameras, thermal imaging sensors, depth sensors, or the like, can be disposed non-intrusively at various positions around the loading docks, conveyor belts, forklifts, sorting stations, holding areas, and the like.
- One or more additional sensors such as audio, temperature, acceleration, torque, compression, tension, or the like sensors, can also be disposed non-intrusively at various positions.
- the plurality of stations may represent one or more loading docks, one or more stock rooms, the store shelves, the point of sale (e.g. cashier stands, self-checkout stands and auto-payment geofence), and the like.
- a plurality of sensors such as video cameras, thermal imaging sensors, depth sensors, or the like, can be disposed non-intrusively at various positions around the loading docks, stock rooms, store shelves, point of sale stands and the like.
- One or more additional sensors such as audio, acceleration, torque, compression, tension, or the like sensors, can also be disposed non-intrusively at various positions around the loading docks, stock rooms, store shelves, point of sale stands and the like.
- the plurality of stations may represent receiving areas, inventory storage, picking totes, conveyors, packing areas, shipping areas, and the like.
- a plurality of sensors such as video cameras, thermal imaging sensors, depth sensors, or the like, can be disposed non-intrusively at various positions around the receiving areas, inventory storage, picking totes, conveyors, packing areas, and shipping areas.
- One or more additional sensors such as audio, temperature, acceleration, torque, compression, tension, or the like sensors, can also be disposed non-intrusively at various positions.
- the action recognition and analytics system 100 can include one or more interfaces 135 - 165 .
- the one or more interface 135 - 145 can include one or more sensors 135 - 145 disposed at the one or more stations 105 - 115 and configured to capture streams of data concerning cycles, processes, actions, sequences, object, parameters and or the like by the one or more actors 120 - 130 and or at the station 105 - 115 .
- the one or more sensors 135 - 145 can be disposed non-intrusively, so that minimal to changes to the layout of the assembly line or the plant are required, at various positions around one or more of the stations 105 - 115 .
- the same set of one or more sensors 135 - 145 can be disposed at each station 105 - 115 , or different sets of one or more sensors 135 - 145 can be disposed at different stations 105 - 115 .
- the sensors 135 - 145 can include one or more sensors such as video cameras, thermal imaging sensors, depth sensors, or the like.
- the one or more sensors 135 - 145 can also include one or more other sensors, such as audio, temperature, acceleration, torque, compression, tension, or the like sensors.
- the one or more interfaces 135 - 165 can also include but not limited to one or more displays, touch screens, touch pads, keyboards, pointing devices, button, switches, control panels, actuators, indicator lights, speakers, Augmented Reality (AR) interfaces, Virtual Reality (VR) interfaces, desktop Personal Computers (PCs), laptop PCs, tablet PCs, smart phones, robot interfaces, cobot interfaces.
- the one or more interfaces 135 - 165 can be configured to receive inputs from one or more actors 120 - 130 , one or more engines 170 or other entities.
- the one or more interfaces 135 - 165 can be configured to output to one or more actors 120 - 130 , one or more engine 170 or other entities.
- the one or more front-end units 190 can output one or more graphical user interfaces to present training content, work charts, real time alerts, feedback and or the like on one or more interfaces 165 , such displays at one or more stations 120 - 130 , at management portals on tablet PCs, administrator portals as desktop PCs or the like.
- the one or more front-end units 190 can control an actuator to push a defective unit of the assembly line when a defect is detected.
- the one or more front-end units can also receive responses on a touch screen display device, keyboard, one or more buttons, microphone or the like from one or more actors.
- the interfaces 135 - 165 can implement an analysis interface, mentoring interface and or the like of the one or more front-end units 190 .
- the action recognition and analytics system 100 can also include one or more engines 170 and one or more data storage units 175 .
- the one or more interfaces 135 - 165 , the one or more data storage units 175 , the one or more machine learning back-end units 180 , the one or more analytics units 185 , and the one or more front-end units 190 can be coupled together by one or more networks 192 . It is also to be noted that although the above described elements are described as separate elements, one or more elements of the action recognition and analytics system 100 can be combined together or further broken into different elements.
- the one or more engines 170 can include one or more machine learning back-end units 180 , one or more analytics units 185 , and one or more front-end units 190 .
- the one or more data storage units 175 , the one or more machine learning back-end units 180 , the one or more analytics units 185 , and the one or more analytics front-end units 190 can be implemented on a single computing device, a common set of computing devices, separate computing device, or different sets of computing devices that can be distributed across the globe inside and outside an enterprise.
- aspects of the one or more machine learning back-end units 180 , the one or more analytics units 185 and the one or more front-end units 190 , and or other computing units of the action recognition and analytics system 100 can be implemented by one or more central processing units (CPU), one or more graphics processing units (GPU), one or more tensor processing units (TPU), one or more digital signal processors (DSP), one or more microcontrollers, one or more field programmable gate arrays and or the like, and any combination thereof.
- CPU central processing units
- GPU graphics processing units
- TPU tensor processing units
- DSP digital signal processors
- microcontrollers one or more field programmable gate arrays and or the like, and any combination thereof.
- the one or more data storage units 175 , the one or more machine learning back-end units 180 , the one or more analytics units 185 , and the one or more front-end units 190 can be implemented locally to the one or more stations 105 - 115 , remotely from the one or more stations 105 - 115 , or any combination of locally and remotely.
- the one or more data storage units 175 , the one or more machine learning back-end units 180 , the one or more analytics units 185 , and the one or more front-end units 190 can be implemented on a server local (e.g., on site at the manufacturer) to the one or more stations 105 - 115 .
- the one or more machine learning back-end units 135 , the one or more storage units 175 and analytics front-end units 145 can be implemented on a cloud computing service remote from the one or more stations 105 - 115 .
- the one or more data storage units 175 and the one or more machine learning back-end units 180 can be implemented remotely on a server of a vendor, and one or more data storage units 175 and the one or more front-end units 190 are implemented locally on a server or computer of the manufacturer.
- the one or more sensors 135 - 145 , the one or more machine learning back-end units 180 , the one or more front-end unit 190 , and other computing units of the action recognition and analytics system 100 can perform processing at the edge of the network 192 in an edge computing implementation.
- the above example of the deployment of one or more computing devices to implement the one or more interfaces 135 - 165 , the one or more engines 170 , the one or more data storage units 175 and one or more analytics front-end units 145 are just some of the many different configuration for implementing the one or more machine learning back-end units 135 , one or more data storage units 175 .
- Any number of computing devices, deployed locally, remotely, at the edge or the like can be utilized for implementing the one or more machine learning back-end units 135 , the one or more data storage units 175 , the one or more analytics front-end units 145 or other computing units.
- the action recognition and analytics system 100 can also optionally include one or more data compression units associated with one or more of the interfaces 135 - 165 .
- the data compression units can be configured to compress or decompress data transmitted between the one or more interface 135 - 165 , and the one or more engines 170 .
- Data compression for example, can advantageously allow the sensor data from the one or more interface 135 - 165 to be transmitted across one or more existing networks 192 of a manufacturer.
- the data compression units can also be integral to one or more interfaces 135 - 165 or implemented separately.
- video capture sensors may include an integral Motion Picture Expert Group (MPEG) compression unit (e.g., H-264 encoder/decoder).
- MPEG Motion Picture Expert Group
- the one or more data compression units can use differential coding and arithmetic encoding to obtain a 20 ⁇ reduction in the size of depth data from depth sensors.
- the data from a video capture sensor can comprise roughly 30 GB of H.264 compressed data per camera, per day for a factory operation with three eight-hour shifts.
- the depth data can comprise roughly another 400 GB of uncompressed data per sensor, per day.
- the depth data can be compressed by an algorithm to approximately 20 GB per sensor, per day. Together, a set of a video sensor and a depth sensor can generate approximately 50 GB of compressed data per day.
- the compression can allow the action recognition and analytics system 100 to use a factory's network 192 to move and store data locally or remotely (e.g., cloud storage).
- the action recognition and analytics system 100 can also be communicatively coupled to additional data sources 194 , such as but not limited to a Manufacturing Execution Systems (MES), warehouse management system, or patient management system.
- the action recognition and analytics system 100 can receive additional data, including one or more additional sensor streams, from the additional data sources 194 .
- the action recognition and analytics system 100 can also output data, sensor streams, analytics result and or the like to the additional data sources 194 .
- the action recognition can identify a barcode on an object and provide the barcode input to a MES for tracking.
- the action recognition and analytics system 100 can continually measure aspects of the real-world, making it possible to describe a context utilizing vastly more detailed data sets, and to solve important business problems like line balancing, ergonomics, and or the like.
- the data can also reflect variations over time.
- the one or more machine learning back-end units 170 can be configured to recognize, in real time, one or more cycles, processes, actions, sequences, objects, parameters and the like in the sensor streams received from the plurality of sensors 135 - 145 .
- the one or more machine learning back-end units 180 can recognize cycles, processes, actions, sequences, objects, parameters and the like in sensor streams utilizing deep learning, decision tree learning, inductive logic programming, clustering, reinforcement learning, Bayesian networks, and or the like.
- the deep learning unit 200 can be configured to recognize, in real time, one or more cycles, processes, actions, sequences, objects, parameters and the like in the sensor streams received from the plurality of sensors 120 - 130 .
- the deep learning unit 200 can include a dense optical flow computation unit 210 , a Convolution Neural Networks (CNNs) 220 , a Long Short Term Memory (LSTM) Recurrent Neural Network (RNN) 230 , and a Finite State Automata (FSA) 240 .
- the CNNs 220 can be based on two-dimensional (2D) or three-dimensional (3D) convolutions.
- the dense optical flow computation unit 210 can be configured to receive a stream of frame-based sensor data 250 from sensors 120 - 130 .
- the dense optical flow computation unit 210 can be configured to estimate an optical flow, which is a two-dimension (2D) vector field where each vector is a displacement vector showing the movement of points from a first frame to a second frame.
- the CNNs 220 can receive the stream of frame-based sensor data 250 and the optical flow estimated by the dense optical flow computation unit 210 .
- the CNNs 220 can be applied to video frames to create a digest of the frames.
- the digest of the frames can also be referred to as the embedding vector.
- the digest retains those aspects of the frame that help in identifying actions, such as the core visual clues that are common to instances of the action in question.
- spatio-temporal convolutions can be performed to digest multiple video frames together to recognize actions.
- the first two dimension can be along space, and in particular the width and height of each video frame.
- the third dimension can be along time.
- the neural network can learn to recognize actions not just from the spatial pattern in individual frame, but also jointly in space and time.
- the neural network is not just using color patterns in one frame to recognize actions. Instead, the neural network is using how the pattern shifts with time (i.e., motion cues) to come up with its classification.
- the 3D CNN is attention driven, in that it proceeds by identifying 3D spatio-temporal bounding boxes as Regions of Interest (RoI) and focusses on them to classify actions.
- RoI Regions of Interest
- the input to the deep learning unit 200 can include multiple data streams.
- a video sensor signal which includes red, green and blue data streams, can comprise three channels.
- Depth image data can comprise another channel. Additional channels can accrue from temperature, sound, vibration, data from sensors (e.g., torque from a screwdriver) and the like.
- dense optical flow fields can be computed by the dense optical flow computation unit 210 and fed to the Convolution Neural Networks (CNNs) 220 .
- CNNs Convolution Neural Networks
- the RGB and depth streams can also be fed to the CNNs 220 as additional streams of derived data.
- the Long Short Term Memory (LSTM) Recurrent Neural Network (RNN) 230 can be fed the digests from the output of the Convolution Neural Networks (CNNs) 220 .
- the LSTM can essentially be a sequence identifier that is trained to recognize temporal sequences of sub-events that constitute an action.
- the combination of the CNNs and LSTM can be jointly trained, with full back-propagation, to recognize low-level actions.
- the low-level actions can be referred to as atomic actions, like picking a screw, picking a screwdriver, attaching screw to screwdriver and the like.
- the Finite State Automata (FSA) 240 can be mathematical models of computations that include a set of state and a set of rules that govern the transition between the states based on the provided input.
- the FSA 240 can be configured to recognize higher-level actions 260 from the atomic actions.
- the high-level actions 260 can be referred to as molecular actions, for example turning a screw to affix a hard drive to a computer chassis.
- the CNNs and LSTM can be configured to perform supervised training on the data from the multiple sensor streams. In one implementation, approximately 12 hours of data, collected over the course of several days, can be utilized to train the CNNs and LSTM combination.
- the CNNs can include a frame feature extractor 310 , a first Fully Connected (FC) layer 320 , a Region of Interest (RoI) detector unit 330 , a RoI pooling unit 340 , and a second Fully Connected (FC) layer 350 .
- FC Fully Connected
- RoI Region of Interest
- FC Fully Connected
- FIG. 4 shows an exemplary method of detecting actions in a sensor stream.
- the frame feature extractor 310 of the Convolution Neural Networks (CNNs) 220 can receive a stream of frame-based sensor data, at 410 .
- the frame feature extractor 310 can perform a two-dimensional convolution operation on the received video frame and generate a two-dimensional array of feature vectors.
- the frame feature extractor 310 can work on the full resolution image, wherein a deep network is effectively sliding across the image generating a feature vector at each stride position.
- each element of the 2D feature vector array is a descriptor for the corresponding receptive field (e.g., fixed portion of the underlying image).
- the first Fully Connected (FC) layer can flatten the high-level features extracted by the frame feature extractor 310 , and provide additional non-linearity and expressive power, enabling the machine to learn complex non-linear combinations of these features.
- the RoI detector unit 330 can combine neighboring feature vectors to make a decision on whether the underlying receptive field belongs to a Region of Interest (RoI) or not. If the underlying receptive field belongs to a RoI, a RoI rectangle can be predicted from the same set of neighboring feature vectors, at 440 . At, 450 , a RoI rectangle with a highest score can be chosen by the RoI detector unit 330 . For the chosen RoI rectangle, the feature vectors lying within it can be aggregated by the RoI pooling unit 340 , at 460 . The aggregated feature vector is a digest/descriptor for the foreground for that video frame.
- RoI Region of Interest
- the RoI detector unit 330 can determine a static RoI.
- the static RoI identifies a Region of Interest (RoI) within an aggregate set of feature vectors describing a video frame, and generates a RoI area for the identified RoI.
- a RoI area within a video frame can be indicated with a RoI rectangle that encompasses an area of the video frame designated for action recognition, such as an area in which actions are performed in a process.
- the RoI area can be designated with a box, circle, highlighted screen, or any other geometric shape or indicator having various scales and aspect ratios used to encompass a RoI.
- the area within the RoI rectangle is the area within the video frame to be processed by the Long Short Term Memory (LSTM) for action recognition.
- LSTM Long Short Term Memory
- the Long Short Term Memory can be trained using a RoI rectangle that provides, both, adequate spatial context within the video frame to recognize actions and independence from irrelevant portions of the video frame in the background.
- the trade-off between spatial context and background independence ensures that the static RoI detector can provide clues for the action recognition while avoiding spurious unreliable signals within a given video frame.
- the RoI detector unit 330 can determine a dynamic RoI.
- a RoI rectangle can encompass areas within a video frame in which an action is occurring. By focusing on areas in which action occurs, the dynamic RoI detector enables recognition of actions outside of a static RoI rectangle while relying on a smaller spatial context, or local context, than that used to recognize actions in a static RoI rectangle.
- the RoI pooling unit 340 extracts a fixed-sized feature vector from the area within an identified RoI rectangle, and discards the remaining feature vectors of the input video frame.
- the fixed-sized feature vector, or foreground feature includes the feature vectors generated by the video frame feature extractor that are located within the coordinates indicating a RoI rectangle as determined by the RoI detector unit 330 . Because the RoI pooling unit 340 discards feature vectors not included within the RoI rectangle, the Convolution Neural Networks (CNNs) 220 analyzes actions within the RoI only, thus ensuring that unexpected changes in the background of a video frame are not erroneously analyzed for action recognition.
- CNNs Convolution Neural Networks
- the Convolution Neural Networks (CNNs) 220 can be an Inception ResNet.
- the Inception ResNet can utilize a sliding window style operation. Successive convolution layers output a feature vector at each point of a two-dimensional grid.
- the feature vector at location (x,y) at level 1 can be derived by weighted averaging features from a small local neighborhood (aka receptive field) N around the (x,y) at level 1-1 followed by a pointwise non-linear operator.
- the non-linear operator can be the RELU (max(0,x)) operator.
- the convolution layers can be shared between RoI detector 330 and the video frame feature extractor 310 .
- the RoI detector unit 330 can identify the class independent rectangular region of interest from the video frame.
- the video frame feature extractor can digest the video frame into feature vectors. The sharing of the convolution layers improves efficiency, wherein these expensive layers can be run once per frame and the results saved and reused.
- RoI Region of Interest
- a set of concentric anchor boxes can be employed at each sliding window stop.
- the first set of outputs can be a Region of Interest (RoI) present/absent that includes 18 outputs of the form 0 or 1.
- An output of 0 indicates the absence of a RoI within the anchor box, and an output of 1 indicates the presence of a RoI within the anchor box.
- the second set of outputs can include Bounding Box (BBox) coordinates including 36 floating point outputs indicating the actual BBox for each of the 9 anchor boxes. The BBox coordinates are to be ignored if the RoI present/absent output indicates the absence of a RoI.
- BBox Bounding Box
- Equation 2 The loss function can be determined by Equation 2:
- the left term in the loss function is the error in predicting the probability of the presence of a RoI, while the second term is the mismatch in the predicted Bounding Box (BBox). It should be noted that the second term vanishes when the ground truth indicates that there is no RoI in the anchor box.
- the static Region of Interest is independent of the action class.
- a dynamic Region of Interest that is class dependent, is proposed by the CNNs. This takes the form of a rectangle enclosing the part of the image where the specific action is occurring. This increases the focus of the network and takes it a step closer to a local context-based action recognition.
- the frame feature can be extracted from within the RoI. These will yield a background independent frame digest. But this feature vector also needs to be a fixed size so that it can be fed into the Long Short Term Memory (LSTM).
- the fixed size can be achieved via RoI pooling. For RoI pooling, the RoI can be tiled up into 7 ⁇ 7 boxes. The mean of all feature vectors within a tile can then be determined. Thus, 49 feature vectors that are concatenated from the frame digest can be produced.
- the second Fully Connected (FC) layer 350 can provide additional non-linearity and expressive power to the machine, creating a fixed size frame digest that can be consumed by the LSTM 230 .
- successive foreground features can be fed into the Long Short Term Memory (LSTM) 230 to learn the temporal pattern.
- the LSTM 230 can be configured to recognize patterns in an input sequence. In video action recognition, there could be patterns within sequences of frames belonging to a single action, referred to as intra action patterns. There could also be patterns within sequences of actions, referred to as inter action patterns.
- the LSTM can be configured to learn both of these patterns, jointly referred to as temporal patterns.
- the Long Short Term Memory (LSTM) analyzes a series of foreground features to recognize actions belonging to an overall sequence. In one implementation, the LSTM outputs an action class describing a recognized action associated with an overall process for each input it receives.
- each class action is comprised of sets of actions describing actions associated with completing an overall process.
- Each action within the set of actions can be assigned a score indicating a likelihood that the action matches the action captured in the input video frame.
- Each action may be assigned a score such that the action with the highest score is designated the recognized action class.
- Foreground features from successive frames can be feed into the Long Short Term Memory (LSTM).
- the foreground feature refers to the aggregated feature vectors from within the Region of Interest (RoI) rectangles.
- the output of the LSTM at each time step is the recognized action class.
- the loss for each individual frame is the cross entropy softmax loss over the set of possible action classes.
- a batch is defined as a set of three randomly selected set of twelve frame sequences in the video stream.
- the loss for a batch is defined as the frame loss averaged over the frame in the batch.
- the numbers twelve and three are chose empirically.
- the overall LSTM loss function is given by Equation 4:
- A denotes the set of all action classes, a tl denotes the ith action class score for the tth frame from LSTM and a tl o denotes the corresponding Ground Truth.
- the machine learning back-end unit 135 can utilize custom labelling tools with interfaces optimized for labeling RoI, cycles and action.
- the labelling tools can include both standalone application built on top of Open source Computer Vision (OpenCV) and web browser application that allow for the labeling of video segment.
- OpenCV Open source Computer Vision
- the action recognition and analytics system 500 can be deployed in a manufacturing, health care, warehousing, shipping, retail, restaurant, or similar context.
- the system 500 similarly includes one or more sensors 505 - 515 disposed at one or more stations, one or more machine learning back-end units 520 , one or more analytics units 525 , and one or more front-end units 530 .
- the one or more sensors 505 - 515 can be coupled to one or more local computing devices 535 configured to aggregate the sensor data streams from the one or more sensors 505 - 515 for transmission across one or more communication links to a streaming media server 540 .
- the streaming media server 540 can be configured to received one or more streams of sensor data from the one or more sensors 505 - 515 .
- a format converter 545 can be coupled to the streaming media server 540 to receive the one or more sensor data streams and convert the sensor data from one format to another.
- the one or more sensors may generate Motion Picture Expert Group (MPEG) formatted (e.g., H.264) video sensor data, and the format converter 545 can be configured to extract frames of JPEG sensor data.
- An initial stream processor 550 can be coupled to the format convert 555 .
- the initial stream processor 550 can be configured to segment the sensor data into pre-determined chucks, subdivide the chunks into key frame aligned segment, and create per segment sensor data in one or more formats.
- the initial stream processor 550 can divide the sensor data into five minute chunks, subdivide the chunks into key frame aligned segment, and convert the key frame aligned segments into MPEG, MPEG Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH) format, and or the like.
- the initial stream processor 550 can be configured to store the sensor stream segments in one or more data structures for storing sensor streams 555 .
- each new segment can be appended to the previous sensor stream segments stored in the one or more data structures for storing sensor streams 555 .
- a stream queue 560 can also be coupled to the format converter 545 .
- the stream queue 560 can be configured to buffer the sensor data from the format converter 545 for processing by the one or more machine learning back-end units 520 .
- the one or more machine learning back-end units 520 can be configured to recognize, in real time, one or more cycles, processes, actions, sequences, objects, parameters and the like in the sensor streams received from the plurality of sensors 505 - 515 .
- FIG. 6 an exemplary method of detecting actions, in accordance with aspects of the present technology, is shown.
- the action recognition method can include receiving one or more sensor streams from one or more sensors, at 610 .
- one or more machine learning back-end units 520 can be configured to receive sensor streams from sensors 505 - 515 disposed at one or more stations.
- a plurality of processes including one or more actions arranged in one or more sequences and performed on one or more objects, and one or more parameters can be detected. in the one or more sensor streams.
- one or more cycles of the plurality of processes in the sensor stream can also be determined.
- the one or more machine learning back-end units 520 can recognize cycles, processes, actions, sequences, objects, parameters and the like in sensor streams utilizing deep learning, decision tree learning, inductive logic programming, clustering, reinforcement learning, Bayesian networks, and or the like.
- indicators of the one or more cycles, one or more processes, one or more actions, one or more sequences, one or more objects, and one or more parameters can be generated.
- the one or more machine learning back-end units 520 can be configured to generate indicators of the one or more cycles, processes, actions, sequences, objects, parameters and or the like.
- the indicators can include descriptions, identifiers, values and or the like associated with the cycles, processes, actions, sequences, objects, and or parameters.
- the parameters can include, but is not limited to, time, duration, location (e.g., x, y, z, t), reach point, motion path, grid point, quantity, sensor identifier, station identifier, and bar codes.
- the indicators of the one or more cycles, one or more processes, one or more actions, one or more sequences, one or more objects, and one or more parameters indexed to corresponding portions of the sensor streams can be stored in one or more data structures for storing data sets 565 .
- the one or more machine learning back-end units 520 can be configured to store a data set including the indicators of the one or more processes, one or more actions, one or more sequences, one or more objects, and one or more parameters for each cycle.
- the data sets can be stored in one or more data structures for storing the data sets 565 .
- the indicators of the one or more cycles, one or more processes, one or more actions, one or more sequences, one or more objects, and one or more parameters in the data sets can be indexed to corresponding portion of the sensor streams in one or more data structures for storing sensor streams 555 .
- the one or more streams of sensor data and the indicators of the one or more of the plurality of cycles, one or more processes, one or more actions, one or more sequences, one or more objects and one or more parameters indexed to corresponding portion of the one or more streams of sensor data can be encrypted when stored to protect the integrity of the streams of sensor data and or the data sets.
- the one or more streams of sensor data and the indicators of the one or more of the plurality of cycles, one or more processes, one or more actions, one or more sequences, one or more objects and one or more parameters indexed to corresponding portion of the one or more streams of sensor data can be stored utilizing block chaining.
- the blockchaining can be applied across the cycles, sensor streams, stations, supply chain and or the like.
- the blockchaining can include calculating a cryptographic hash based on blocks of the data sets and or blocks of the streams of sensor data.
- the data sets, streams of sensor data and the cryptographic hash can be stored in one or more data structures in a distributed network.
- the one or more analytics units 525 can be coupled to the one or more data structures for storing the sensor streams 555 , one or more data structures for storing the data set 565 , one or more additional sources of data 570 , one or more data structures for storing analytics 575 .
- the one or more analytics units 525 can be configured to perform statistical analysis on the cycle, process, action, sequence, object and parameter data in one or more data sets.
- the one or more analytics units 525 can also utilize additional data received from one or more additional data sources 570 .
- the additional data sources 570 can include, but are not limited to, Manufacturing Execution Systems (MES), warehouse management system, or patient management system, accounting systems, robot datasheets, human resource records, bill of materials, and sales systems.
- MES Manufacturing Execution Systems
- Some examples of data that can be received from the additional data sources 570 can include, but is not limited to, time, date, shift, day of week, plant, factory, assembly line, sub-assembly line, building, room, supplier, work space, action capability, and energy consumption, ownership cost.
- the one or more analytics units 525 can be configured to utilize the additional data from one or more additional source of data 570 to update, correct, extend, augment or the like, the data about the cycles, processes, action, sequences, objects and parameters in the data sets.
- the additional data can also be utilized to update, correct, extend, augment or the like, the analytics generate by the one or more analytics front-end units 525 .
- the one or more analytics units 525 can also store trends and other comparative analytics utilizing the data sets and or the additional data, can use sensor fusion to merge data from multiple sensors, and other similar processing and store the results in the one or more data structures for storing analytics 575 .
- one or more engines 170 such as the one or more machine learning back-end units 520 and or the one or more analytics units 525 , can create a data structure including a plurality of data sets, the data sets including one or more indicators of at least one of one or more cycles, one or more processes, one or more actions, one or more sequences, one or more object and one or more parameters.
- the one or more engine 170 can build the data structure based on the one of one or more cycles, one or more processes, one or more actions, one or more sequences, one or more object and one or more parameters detected in the one or more sensor streams.
- the data structure definition, configuration and population can be performed in real time based upon the content of the one or more sensor streams.
- Table 1 shows a table defined, configured and populated as the sensor streams are processed by the one or more machine learning back-end unit 520 .
- the data structure creation process can continue to expand upon the initial structure and or create additional data structures base upon additional processing of the one or more sensor streams.
- the status associated with entities is added to a data structure configuration (e.g., engaged in an action, subject to a force, etc.) based upon processing of the access information.
- activity associated with the entities is added to a data structure configuration (e.g., engaged in an action, subject to a force, etc.) based upon processing of the access information.
- entity status data set created from processing of above entity ID data set e.g., motion vector analysis of image object, etc.
- a third-party data structure as illustrated in Table 3 can be accessed.
- activity associated with entities is added to a data structure configuration (e.g., engaged in an action, subject to a force, etc.) based upon processing of the access information as illustrated in Table 4.
- Table 4 is created by one or more engines 170 based on further analytics/processing of info in Table 1, Table 2 and Table 3.
- Table 4 is automatically configured to have a column for screwing to motherboard. In frames 1 and 3 since hand is moving (see Table 2) and screw present (see Table 1), then screwing to motherboard (see Table 3). In frame 2 , since hand is not moving (see Table 2) and screw not present (see Table 1), then no screwing to motherboard (see Table 3).
- Table 4 is also automatically configured to have a column for human action safe.
- frame 1 since leg not moving in frame (see Table 2) the worker is safely (see Table 3) standing at workstation while engage in activity of screwing to motherboard.
- frame 3 since leg moving (see Table 2) the worker is not safely (see Table 3) standing at workstation while engage in activity of screwing to motherboard.
- the one or more analytics units 525 can also be coupled to one or more front-end units 580 .
- the one or more front-end units 575 can include a mentor portal 580 , a management portal 585 , and other similar portals.
- the mentor portal 550 can be configured for presenting feedback generated by the one or more analytics units 525 and or the one or more front-end units 575 to one or more actors.
- the mentor portal 580 can include a touch screen display for indicating discrepancies in the processes, actions, sequences, objects and parameters at a corresponding station.
- the mentor portal 580 could also present training content generated by the one or more analytics units 525 and or the one or more front-end units 575 to an actor at a corresponding station.
- the management port 585 can be configured to enable searching of the one or more data structures storing analytics, data sets and sensor streams.
- the management port 585 can also be utilized to control operation of the one or more analytics units 525 for such functions as generating training content, creating work charts, performing line balancing analysis, assessing ergonomics, creating job assignments, performing causal analysis, automation analysis, presenting aggregated statistics, and the like.
- the action recognition and analytics system 500 can non-intrusively digitize processes, actions, sequences, objects, parameters and the like performed by numerous entities, including both humans and machines, using machine learning.
- the action recognition and analytics system 500 enables human activity to be measured automatically, continuously and at scale. By digitizing the performed processes, actions, sequences, objects, parameters, and the like, the action recognition and analytics system 500 can optimize manual and/or automatic processes.
- the action recognition and analytics system 500 enables the creation of a fundamentally new data set of human activity.
- the action recognition and analytics system 500 enables the creation of a second fundamentally new data set of man and machine collaborating in activities.
- the data set from the action recognition and analytics system 500 includes quantitative data, such as which actions were performed by which person, at which station, on which specific part, at what time.
- the data set can also include judgements based on performance data, such as does a given person perform better or worse that average.
- the data set can also include inferences based on an understanding of the process, such as did a given product exited the assembly line with one or more incomplete tasks.
- the action recognition and analytics system can include a plurality of sensor layers 702 , a first Application Programming Interface (API) 704 , a physics layer 706 , a second API 708 , a plurality of data 710 , a third API 712 , a plurality of insights 714 , a fourth API 716 and a plurality of engine layers 718 .
- the sensor layer 702 can include, for example, cameras at one or more stations 720 , MES stations 722 , sensors 724 , IIoT integrations 726 , process ingestion 728 , labeling 730 , neural network training 732 and or the like.
- the physics layer 706 captures data from the sensor layer 702 to passes it to the data layer 710 .
- the data layer 710 can include but not limited to, video and other streams 734 , +NN annotations 736 , +MES 738 , +OSHA database 740 , and third-party data 742 .
- the insights layer 714 can provide for video search 744 , time series data 746 , standardized work 748 , and spatio-temporal 842 .
- the engine layer 718 can be utilized for inspection 752 , lean/line balancing 754 , training 756 , job assignment 758 , other applications 760 , quality 763 , traceability 764 , ergonomics 766 , and third party applications 768 .
- the action recognition and analytics system can include a plurality of sensor layers 702 , a first Application Programming Interface (API) 704 , a physics layer 706 , a second API 708 , a plurality of data 710 , a third API 712 , a plurality of insights 714 , a fourth API 716 and a plurality of engine layers 718 .
- the sensor layer 702 can include, for example, cameras at one or more stations 720 , MES stations 722 , sensors 724 , IIoT integrations 726 , process ingestion 728 , labeling 730 , neural network training 732 and or the like.
- the physics layer 706 captures data from the sensor layer 702 to passes it to the data layer 710 .
- the data layer 710 can include but not limited to, video and other streams 734 , +NN annotations 736 , +MES 738 , +OSHA database 740 , and third-party data 742 .
- the insights layer 714 can provide for video search 744 , time series data 746 , standardized work 748 , and spatio-temporal 750 .
- the engine layer 718 can be utilized for inspection 752 , lean/line balancing 754 , training 756 , job assignment 758 , other applications 760 , quality 762 , traceability 764 , ergonomics 766 , and third party applications 768 .
- a station or area associated with an activity can include various entities, some of which participate in the activity within the area.
- An entity can be considered an actor, an object, and so on.
- An actor can perform various actions on an object associated with an activity in the station.
- a station can be compatible with various types of actors (e.g., human, robot, machine, etc.).
- An object can be a target object that is the target of the action (e.g., thing being acted on, a product, a tool, etc.). It is appreciated that an object can be a target object that is the target of the action and there can be various types of target objects (e.g., component of a product or article of manufacture, an agricultural item, part of a thing or person being operated on, etc.).
- An object can be a supporting object that supports (e.g., assists, facilitates, aids, etc.) the activity.
- supports e.g., assists, facilitates, aids, etc.
- load bearing components e.g., a work bench, conveyor belt, assembly line, table top etc.
- a tool e.g., drill, screwdriver, lathe, press, etc.
- a device that regulates environmental conditions e.g., heating ventilating and air conditioning component, lighting component, fire control system, etc.
- the station 800 can include a human actor 810 , supporting object 820 , and target objects 830 and 840 .
- the human actor 810 is assembling a product that includes target objects 830 , 840 while supporting object 820 is facilitating the activity.
- target objects 830 , 840 are portions of a manufactured product (e.g., a motherboard and a housing of an electronic component, a frame and a motor of a device, a first and a second structural member of an apparatus, legs and seat portion of a chair, etc.).
- target objects 830 , 840 are items being loaded in a transportation vehicle.
- target objects 830 , 840 are products being stocked in a retail establishment.
- Supporting object 820 is a load bearing component (e.g., a work bench, a table, etc.) that holds target object 840 (e.g., during the activity, after the activity, etc.).
- Sensor 850 senses information about the station (e.g., actors, objects, activities, actions, etc.) and forwards the information to one or more engines 860 .
- Sensor 850 can be similar to sensor 135 .
- Engine 860 can include a machine learning back end component, analytics, and front end similar to machine learning back end unit 180 , analytics unit 190 , and front end 190 .
- Engine 860 performs analytics on the information and can forward feedback to feedback component 870 (e.g., a display, speaker, etc.) that conveys the feedback to human actor 810 .
- feedback component 870 e.g., a display, speaker, etc.
- the station 900 includes a robot actor 910 , target objects 920 , 930 , and supporting objects 940 , 950 .
- the robot actor 910 is assembling target objects 920 , 930 and supporting objects 940 , 950 are facilitating the activity.
- target objects 920 , 930 are portions of a manufactured product.
- Supporting object 940 e.g., an assembly line, a conveyor belt, etc. holds target objects 920 , 930 during the activity and moves the combined target object 920 , 930 to a subsequent station (not shown) after the activity.
- Supporting object 940 provides area support (e.g., lighting, fan temperature control, etc.).
- Sensor 960 senses information about the station (e.g., actors, objects, activities, actions, etc.) and forwards the information to engine 970 .
- Engine 970 performs analytics on the information and forwards feedback to a controller 980 that controls robot 910 .
- Engine 970 can be similar to engine 170 and sensor 960 can be similar to sensor 135 .
- a station can be associated with various environments.
- the station can be related to an economic sector.
- a first economic sector can include the retrieval and production of raw materials (e.g., raw food, fuel, minerals, etc.).
- a second economic sector can include the transformation of raw or intermediate materials into goods (e.g., manufacturing products, manufacturing steel into cars, manufacturing textiles into clothing, etc.).
- a third sector can include the supply and delivery of services and products (e.g., an intangible aspect in its own right, intangible aspect as a significant element of a tangible product, etc.) to various parties (e.g., consumers, businesses, governments, etc.).
- the third sector can include sub sectors.
- One sub sector can include information and knowledge-based services.
- Another sub sector can include hospitality and human services.
- a station can be associated with a segment of an economy (e.g., manufacturing, retail, warehousing, agriculture, industrial, transportation, utility, financial, energy, healthcare, technology, etc,). It is appreciated there can be many different types of stations and corresponding entities and activities. Additional descriptions of the station, entities, and activities are discussed in other sections of this detailed description.
- an economy e.g., manufacturing, retail, warehousing, agriculture, industrial, transportation, utility, financial, energy, healthcare, technology, etc.
- station information is gathered and analyzed.
- an engine e.g., an information processing engine, a system control engine, an Artificial Intelligence engine, etc.
- engine can access information regarding the station (e.g., information on the entities, the activity, the action, etc.) and utilizes the information to perform various analytics associated with the station.
- engine can include a machine learning back end unit, analytics unit, front end unit, and data storage unit similar to machine learning back end 180 , analytics 185 , front end 190 and data storage 175 .
- a station activity analysis process is performed. Referring now to FIG. 10 , an exemplary station activity analysis method, in accordance with one embodiment, is shown.
- information regarding the station is accessed.
- the information is accessed by an engine.
- the information can be accessed in real time.
- the information can be accessed from monitors/sensors associated with a station.
- the information can be accessed from an information storage repository.
- the information can include various types of information (e.g., video, thermal. optical, etc.). Additional descriptions of the accessing information are discussed in other sections of this detailed description
- information is correlated with entities in the station and optionally with additional data sources.
- the information the correlation is established at least in part by an engine.
- the engine can associate the accessed information with an entity in a station.
- An entity can include an actor, an object, and so on. Additional descriptions of the correlating information with entities are discussed in other sections of this detailed description.
- various analytics are performed utilizing the accessed information at 1010 , and correlations at 1020 .
- an engine utilizes the information to perform various analytics associated with station.
- the analytics can be directed at various aspects of an activity (e.g., validation of actions, abnormality detection, training, assignment of actor to an action, tracking activity on an object, determining replacement actor, examining actions of actors with respect to an integrated activity, automatic creation of work charts, creating ergonomic data, identify product knitting components, etc.) Additional descriptions of the analytics are discussed in other sections of this detailed description.
- results of the analysis can be forwarded as feedback.
- the feedback can include directions to entities in the station.
- the information accessing, analysis, and feedback are performed in real time. Additional descriptions of the station, engine, entities, activities, analytics and feedback are discussed in other sections of this detailed description,
- accessed information can include general information regarding the station (e.g., environmental information, generic identification of the station, activities expected in station, a golden rule for the station, etc.).
- Environmental information can include ambient aspects and characteristics of the station (e.g., temperature, lighting conditions, visibility, moisture, humidity, ambient aroma, wind, etc.).
- a portion of a station e.g., work bench, floor area, etc.
- a portion of a station can have a first particular visibility level and the ambient environment of the station can have a second particular visibility level.
- an entity e.g., a human, robot, target object, etc.
- the station environment can have a second particular temperature range.
- the action recognition and analytics system 100 , 500 can be utilized for process validation, anomaly detection and/or process quality assurance in real time.
- the action recognition and analytics system 100 , 500 can also be utilized for real time contextual training.
- the action recognition and analytics system 100 , 500 can be configured for assembling training libraries from video clips of processes to speed new product introductions or onboard new employees.
- the action recognition and analytics system 100 , 500 can also be utilized for line balancing by identifying processes, sequences and/or actions to move among stations and implementing lean processes automatically.
- the action recognition and analytics system 100 , 500 can also automatically create standardized work charts by statistical analysis of processes, sequences and actions.
- the action recognition and analytics system 100 , 500 can also automatically create birth certificate videos for a specific unit.
- the action recognition and analytics system 100 , 500 can also be utilized for automatically creating statistically accurate ergonomics data.
- the action recognition and analytics system 100 , 500 can also be utilized to create programmatic job assignments based on skills, tasks, ergonomics and time.
- the action recognition and analytics system 100 , 500 can also be utilized for automatically establishing traceability including for causal analysis.
- the action recognition and analytics system 100 , 500 can also be utilized for kitting products, including real time verification of packing or unpacking by action and image recognition.
- the action recognition and analytics system 100 , 500 can also be utilized to determine the best robot to replace a worker when ergonomic problems are identified.
- the action recognition and analytics system 100 , 500 can also be utilized to design an integrated line of humans and cobot and/or robots.
- the action recognition and analytics system 100 , 500 can also be utilized for automatically programming robots based on observing non-modeled objects in the work space.
- the deep learning systems and methods can be directed to actual conditions/objects that exist. Based on the statistical properties of the data collected by the deep learning systems or the knowledge of the process engineer, a golden process can be identified.
- a golden process is an optimal solution (in terms of locations, actions, objects, conditions, etc,) to maximize productivity subject to cost, labor, machine and other constraints.
- the conditions/objects may be introduced to the activity space but not be ones included in the previous/golden process.
- activity of actors e.g., human, robot, machine, etc.
- Programing robots on the plant floor is often a time-consuming process, especially if a large number of stations have to be prepared for production.
- Simulation tools like those from Dassault Systems and Siemens are commonly used with CAD data to simulate the motion of the chosen robots and optimal paths are planned a priori.
- the robot programmer downloads the simulated path (with 3D position and orientation as well as velocity information).
- objects e.g. cables, hose, additional tooling etc.
- the robot programmer is often left having to completely reprogram the robot's motion plan, losing the benefits of pre-programming.
- Most robot simulators lack the ability to view and analyze the workstation and are unable to help with reprogramming the originally simulated path.
- the engine systems and methods can observe actors (e.g., robots, other programmable machines, humans, cobots, etc.), and the physical environment they are in, to detect “foreign” objects in the scene, and to flag potential collision points.
- a deep learning system and method constructs a “picture” of the workspace as it currently exist.
- the deep learning system and method can, either on its own or in partnership with robot simulation products, identify collision points in the robot's path. Representing these newly observed solid objects, it can help update the geometric models, leaving the simulation package to discover newer, collision-free paths that the robot programmer can start working with.
- the deep learning system and method saves effort, as originally desired.
- a human and a robot a robot and a robot, a human and a plurality of other humans, a human and a plurality of robots, a robot and a plurality of other robots, and so on.
- a deep learning system can observe cobots/robots executing tasks.
- the engine observes the cobots/robots just as easily as it can observe humans performing their tasks.
- observing robots is much easier, since the variability in their motion is much lower.
- the deep learning system can provide recommendations to optimally ensure safe and productive ways.
- human data if there are ergonomic hazards, the time and motion study can be used to identify an appropriate robot from a library of robots available.
- robot data identify tasks that might be better served for humans because of challenges that the robot system might be facing.
- a deep learning system can help minimize the footprint based on motions of robots and humans working together. In other words, run the same design process on a human-machine system.
- a deep learning system can observe the actors (e.g., human and machine, cobot and robot, etc.) at work.
- the deep learning system determines the work envelopes and time and motion studies of both actors, substituting representative and probabilistic models for them when required for simulation purposes.
- safety is the primary cost function, it identifies co-working spaces by overlaying reach, motion and action data.
- the deep learning system can use mathematical techniques from simply overlaying spatial work envelopes to spatio-temporal representations to determine the relative positions of the assembly line, the worker and the robot/cobot system, their kinematic and dynamic properties as well as safer parts of their work envelopes.
- FIG. 11 is a block diagram of activity space 1100 with an actor in accordance with one embodiment.
- Activity space 1100 includes actor 1110 with access to reach points 1121 , 1124 a , 1124 b , 1125 a , 1125 b , and 1127 .
- the actor 1110 is shown coupling two product components by moving a first product component at reach point 1124 a to reach point 1124 b via motion 1131 and a second component at reach point 1125 a to reach point 1125 b via motion 1132 .
- FIG. 12 is a block diagram of activity space 1200 with an actor in accordance with one embodiment.
- Activity space 1200 includes actor 1210 with access to reach points 1221 , 1224 a , 1224 b , 1225 a , 1225 b , and 1227 .
- the actor 1210 is shown failing to coupling two product components by previously unmodeled object 1222 ).
- the actor can move a first product component at reach point 1224 a to reach point 1124 b via motion 1131 but can not move a second component at reach point 1125 a via a similar motion.
- an engine creates a model for an activity space.
- FIG. 13 is a flow chart of an automated actor modeling method 1300 in accordance with one embodiment.
- information associated with a first actor is accessed, including sensed activity information associated with an activity space.
- the activity space can include a task space associated with performance of a task.
- the sensed activity information is associated with a grid within the activity space.
- the first actor can be a human and the second actor is a device.
- the first actor is a human and the second actor is a human.
- the first actor is a device and the second actor is a device.
- the activity information is analyzed, including analyzing activity of the first actor with respect to a plurality of other actors.
- the analyzing includes: comparing information associated with activity of the first actor within the activity space with anticipated activity of the respective ones of the plurality of the actors within the activity space; and analyzing/comparing deviations between the activity of the first actor and the anticipated activity of the second actor.
- the analyzing comprises: determining if the deviation associated with a respective one of the plurality of actors is within an acceptable threshold (e.g., limit/parameter, measurement, accuracy, payload, etc.), and identifying the respective one of the plurality of other actors as a potential acceptable candidate to be the replacement actor when the deviation associated with a respective one of the plurality of actors is within the acceptable threshold.
- the analyzing can further comprise eliminating the respective one of the plurality of other actors as a potential acceptable candidate to be the replacement actor when the deviation associated with a respective one of the plurality of actors is not within the acceptable threshold.
- the analyzing can include automated artificial intelligence analysis.
- the results include identification of a second actor as a replacement actor to replace the first actor, wherein the second actor is one of the plurality of other actors.
- the reach scenario shows six reach locations A through F.
- the locations can correspond to a zone (e.g., a primary reach zone, a secondary reach zone, a tertiary reach zone, etc.).
- the reach locations can be associated with activities (e.g., motions, tasks, actions, etc.) performed by actor 1410 .
- an engine performs an analysis of the reach scenario and corresponding activities.
- the analysis can include identification of the reach points (e.g., based on sensed/monitored information from the station, third party information, etc.).
- the engine generates a data structure based on the analysis of an activity in a station.
- the data structure can include information associated with a reach scenario.
- the table below is a block diagram of an exemplary data structure in accordance with one embodiment of the present invention. In one exemplary implementation, the table corresponds to the reach scenario in FIG. 14 .
- the location row includes identification of the locations of the reach point.
- the reach distance row includes distances of the reach point from the actor.
- the frequency is the number of time the actor motions to the reach point location.
- the payload weight is the weight of an object the actor is supporting/holding at the reach point. It is appreciated that payload weights can change as components are added/removed due to an activity at a reach point.
- the heaviest weight of the object e.g., before component is removed, after a component is added, etc.
- An engine can access a sensed measurement of a torque, a calculated torque (e.g., based on the distance of an object from a moment/twist point and weight of an object, etc.).
- FIG. 15 is a top down view of another exemplary reach scenario in a station is shown in accordance with one embodiment.
- the reach scenario shows six reach locations U through Z.
- the locations can correspond to a zone (e.g., a primary reach zone, a secondary reach zone, a tertiary reach zone, etc.).
- the reach locations can be associated with activities (e.g., motions, tasks, actions, etc.) performed by actor 1510 .
- an engine performs an analysis of the reach scenario and corresponding activities.
- the analysis can include identification of the reach points (e.g., based on sensed/monitored information from the station, third party information, etc.).
- the engine analysis can also include identification of zones (e.g., a primary zone, a secondary, zone, a tertiary zone, etc.) in which a respective one or more of the reach points are located.
- the zones can correspond to different characteristics (e.g., distance from an actor, load constraints, etc.).
- a primary zone and tertiary zone correspond to locations that are relatively awkward to reach (e.g., need to lean back, need to lean forward, pick up parts from a particular orientation, etc.).
- a load limit in a secondary zone can be higher than a tertiary zone (e.g., the tertiary zone can put higher torque strain on an actor's supporting member/component, arm, joint, pivot point, etc.).
- the engine generates a data structure based on the analysis of an activity in a station.
- the data structure can include information attached kinematics (e.g., attributes, motion, reach, velocity, etc.) and matched dynamics (e.g., torque, force, etc.) associated with a reach scenario.
- the data structure can include spatio-temporal information related to activities of an actor in the work space.
- FIG. 16 is a block diagram of an exemplary data structure in accordance with one embodiment.
- the activity and corresponding starting coordinates and ending coordinates can be An engine can produce motion data from worker's hands starting position (e.g., x, y, z, roll, pitch and yaw) to ending position (e.g., x1, y1, z1, roll1, pitch1, yaw1).
- the motion data can include the movement distance P(x,y,z) minus P(x1, y1, z1). It can also be computed in six dimensional space. This data can be analyzed over a time-period for repetitive motions to identify ergonomic issues developing across long periods. This is shown by the dates and times, identified actions, starting coordinates, and in coordinates, the weight of the item, and the movement distance.
- a correlation to between the activity and a reach point is established.
- the activities can be similar to those in the data structure of FIG. 16 and the reach points can be similar to the reach scenario data structure above).
- identifying coordinates corresponding to reach points e., reach points A through F, U through Z, etc. can be created by the engine using the information in the table shown above an in FIG. 16 .
- FIG. 17 is a convex hull curve of the reach points in accordance with one embodiment.
- FIG. 18 is a reach curve with human motion dynamics in accordance with one embodiment.
- FIG. 19 is a reach curve with attitudinal control in accordance with one embodiment.
- the attitudinal control is associated with an arm and hand grabbing an object from a particular orientation during an activity (e.g., engaging in an action, execution of a task, etc.).
- the curve is associated with a special case of basic motion dynamics with attitudinal control requirements.
- FIG. 20 is a maximum reach curve associated with requirements of different activities in accordance with one embodiment.
- a maximum reach curve is created by overlaying a convex hull curve, a reach curve with human motion dynamics, and reach curve with attitudinal control.
- FIG. 21 is a flow chart of method 2100 in accordance with one embodiment.
- information associated with an activity space is accessed.
- the activity space includes a previously unmodeled entity.
- accessing information includes information associated with sensing or monitoring an activity space.
- the activity information is analyzed.
- activity associated with the previously unmodeled entity is included in the analysis.
- feedback on the results of the analysis is forwarded.
- the feedback includes analysis results for the updated modeled information.
- an unmodeled object is detected in real time.
- paths are recomputed in real time.
- Activity space reconfiguration to avoid issues with a previously unmodeled object can also begin in real time.
- a post-facto path recompute process is run. Execution of the set up or reconfiguration can happen later.
- FIG. 22 is a flow chart of a coordinated plan check process 2200 in accordance with one embodiment.
- a solid/CAD model is created including updated modeled information.
- an activity including the updated modeled information is simulated.
- a coordinated path plan is generated for entities in the activity space.
- FIG. 23 is a block diagram of an activity area 2305 and flow chart of a activity modeling method in accordance with one embodiment.
- Activity area 1105 includes actors 2321 , 2322 , 2323 , and 2324 , a product 2331 on a conveyor belt, and previously unmodeled entity 2341 .
- previously unmodeled entity 2341 is block actor 2323 from accessing the product. This results in the coordinated path plan failing when there is an actual attempt to perform the activity.
- a previously anticipated activity space version 2302 did not include previously unmodeled entity 2341 .
- the information associated with previously anticipated activity space version 2302 is forwarded to the solid/CAD models 2351 , simulation 2352 , and generated coordinated path plan 2353 .
- the coordinated path plan fails in block 2354 when an attempt to use is implemented
- FIG. 24 is a block diagram of an activity area 2405 and flow chart of a activity modeling method in accordance with one embodiment.
- Activity area 2405 includes actors 2421 , 2422 , 2423 , and 2424 , a product 2431 on a conveyor belt, and previously unmodeled entity 2441 .
- Sensor 2471 senses previously unmodeled entity 2441 and forwards corresponding non-modeled information 2472 to engine 2473 .
- Engine 2473 (e.g., similar to engine 170 , etc.) processes the information and generates updated modeled object information which is forwarded to the path process.
- the information associated with the updated model information is forwarded to the solid/CAD models 2451 , simulation 2452 , and generated coordinated path plan 2453 .
- the coordinated path plan is successful in block 2454 when an attempt to use is implemented.
- FIG. 25 is a block diagram of an activity area 2505 and flow chart of a activity modeling method in accordance with one embodiment.
- Activity area 2505 includes actors 2521 , 2522 , 2523 , and 2524 , a product 2531 on a conveyor belt, and previously unmodeled entity 2541 .
- Sensor 2571 senses previously unmodeled entity 2541 and forwards corresponding non-modeled information 2572 to engine 2573 .
- Engine 2573 (e.g., similar to engine 170 , etc.) processes the information and generates updated modeled object information which is forwarded to the path process.
- the information associated with the updated model information is forwarded to the solid/CAD models 2551 , simulation 2552 , and generated coordinated path plan 2553 .
- the coordinated path plan is successful in block 2554 when an attempt to use is implemented.
- FIG. 26 is a block diagram of a data structure 2600 in accordance with one embodiment.
- data structure 2600 is a tree data structure.
- Data structure 2600 includes station information node 2610 which is a parent node for actor group information node 2620 , body-in-white information node 2630 , and tooling information node 2640 .
- Actor group information node 2620 is a parent node for robot information node 2621 , robot information node 2622 , human information node 2623 , and cobot information node 2624 .
- Robot information node 2622 is a parent node for base information node 2622 a , arm information node 2622 b , and end effector node 2622 c .
- Tooling information node 2640 is a parent node for base information node 2641 , clamp node 2642 , and pneumatic hose information node 2643 .
- FIG. 27 is a block diagram of a data structure 2700 in accordance with one embodiment.
- data structure 2700 is a tree data structure.
- Data structure 2700 includes station information node 2710 which is a parent node for actor group information node 2720 , body-in-white information node 2730 , and tooling information node 2740 .
- Actor group information node 2720 is a parent node for robot information node 2721 , robot information node 2722 , human information node 2723 , and cobot information node 2724 .
- Robot information node 2722 is a parent node for base information node 2722 a , arm information node 2722 b , and end effector node 2722 c .
- Tooling information node 2740 is a parent node for base information node 2741 , clamp node 2742 , and pneumatic hose information node 2743 .
- the analysis can include an indication of a condition/situation.
- the condition/situation can be associated with various aspects of an entity and corresponding activity (e.g., a component, a part, a process step, etc.).
- the condition/situation can be an existing condition that has been specifically sensed/detected.
- the analysis and corresponding condition/situation can have a predictive aspect/nature (e.g., impending condition, future state, anticipated action, etc.).
- a condition/situation corresponds to proper performance of an action (e.g., without defect, safely, etc.).
- a condition/situation can be associated with a detrimental scenario (e.g., a hazardous condition, a collision, overheating, a missed/skipped action, a task performed incorrectly, a defective element, wrong component used, a part not properly installed, etc.).
- a prediction regarding movement can be made to determine if a dangerous circumstance/collision is going to happen before a harmful impact occurs. Feedback based on the analysis can be provided. The feedback can enable avoidance of detrimental conditions/situations.
- FIG. 28 is a flow chart of a method 2800 in accordance with one embodiment.
- method 2800 is performed in real time. It is appreciated other embodiments can be include post facto operations/elements.
- information regarding an activity space is accessed in real time.
- the information can be associated with a first actor in the activity space and an object newly discovered in the activity space in real time, (including sensed activity information).
- the information can be accessed in real time.
- the newly discovered object can be a previously non-modeled object (e.g., not previously modeled, etc.). It is appreciated the newly discovered object can be various items (e.g., a component of a product, a second actor, a human. a device, etc.).
- the work environment can be selected from a group of environments comprising; a manufacturing environment, a retail environment, a storage warehouse environment. a medical environment. a food service environment, and a construction environment.
- the activity information is automatically analyzed in real time, including analyzing activity of the first actor with respect to the object.
- the analyzing includes automatic construction of a simulation of the work environment in real time.
- the analyzing includes automatic identification of potential collision points for the first actor in real time including potential collision points with the newly discovered object.
- the analyzing includes automatic identification of the newly discovered object.
- the results of the analysis can include a prediction of a future relationship of the actor and the object.
- the analyzing includes automatic construction of a simulation of the work environment in real time.
- the analyzing includes automatic identification of potential collision points for the first actor in real time including potential collision points with the newly discovered object.
- the analyzing includes overlaying spatial work/task envelope information.
- the overlaying can include temporal consideration.
- the analyzing can include identification of a working space associated with the first actor, and an indication of a detrimental activity by the first actor.
- the detrimental activity can be one predicted to result in an undesirable collision between the first actor and object.
- feedback is forwarded in real time on the results of the analysis to the first actor.
- the analyzing and feedback are provided in sufficient time to permit a change that avoids the detrimental activity.
- the respective feedback can include an objective for the first actor or the second actor.
- the respective feedback can be a directive/control to change the first actor to avoid a collision (detrimental contact with each other).
- FIG. 29 shows a block diagram of an example of a computing system 2900 upon which one or more various embodiments described herein may be implemented in accordance with various embodiments of the present disclosure.
- the computer system 2900 may include a cloud-based computer system, a local computer system, or a hybrid computer system that includes both local and remote devices.
- the system 2900 includes at least one processing unit 2902 and memory 2904 . This basic configuration is illustrated in FIG. 29 by dashed line 2906 .
- the system 2900 may also have additional features and/or functionality.
- the system 2900 may include one or more Graphics Processing Units (GPUs) 2910 .
- GPUs Graphics Processing Units
- system 2900 may also include additional storage (e.g., removable and/or non-removable) including, but not limited to, magnetic or optical disks or tape.
- additional storage e.g., removable and/or non-removable
- FIG. 29 Such additional storage is illustrated in FIG. 29 by removable storage 2908 and non-removable storage 2920 .
- the system 2900 may also contain communications connection(s) 2922 that allow the device to communicate with other devices, e.g., in a networked environment using logical connections to one or more remote computers.
- the system 2900 may also include input device(s) 2924 such as, but not limited to, a voice input device, touch input device, keyboard, mouse, pen, touch input display device, etc.
- the system 2900 may also include output device(s) 2926 such as, but not limited to, a display device, speakers, printer, etc.
- the memory 2904 includes computer-readable instructions, data structures, program modules, and the like associated with one or more various embodiments 2950 in accordance with the present disclosure.
- the embodiment(s) 2950 may instead reside in any one of the computer storage media used by the system 2900 , or may be distributed over some combination of the computer storage media, or may be distributed over some combination of networked computers, but is not limited to such.
- computing system 2900 may not include all of the elements illustrated by FIG. 29 . Moreover, the computing system 2900 can be implemented to include one or more elements not illustrated by FIG. 29 . It is pointed out that the computing system 2900 can be utilized or implemented in any manner similar to that described and/or shown by the present disclosure, but is not limited to such.
- the terms refer to actions and processes of the processing devices that manipulate or transform physical quantities within a computer system's component (e.g., registers, memories, other such information storage, transmission or display devices, etc.) into other data similarly represented as physical quantities within other comonents.
- a computer system's component e.g., registers, memories, other such information storage, transmission or display devices, etc.
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US20190138932A1 (en) | 2019-05-09 |
WO2019090274A1 (fr) | 2019-05-09 |
WO2019090264A1 (fr) | 2019-05-09 |
US20190138971A1 (en) | 2019-05-09 |
US20190138623A1 (en) | 2019-05-09 |
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